农药微胶囊的制备方法及缓控释性能调控的研究进展OA

To address the low utilization rates and severe environmental pollution caused by the loss and degradation of conventional pesticides during application,pesticide microencapsulation controlled-release technology was investigated.By encapsulating active ingredients within polymeric wall materials to form a core-shell structure,the precise control of pesticide release was achieved.It acts as a crucial approach for improving pesticide utilization efficiency,reducing application rates,and optimizing efficacy enhancement.Six mainstream microcapsule preparation methods,including interfacial polymerization,self-assembly,in-situ polymerization,spray drying,freeze-drying,and solvent evaporation,were systematically reviewed.Detailed descriptions of their technical principles,processing characteristics,and representative case studies were provided.Additionally,the profound influence mechanisms of five key property regulation strategies on pesticide release behaviors—namely,particle size tailoring,particle size compounding,shell compactness,shell thickening and toughening of small-sized capsules,and stimuli-responsive mechanisms—were critically explored.Based on the current research status,existing challenges in pesticide microencapsulation technology were analyzed,and its future development directions were prospected.Thus,a theoretical reference was provided for the optimization,upgrading,and industrial application of pesticide microencapsulation controlled-release technology.